<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>1-4结构,内容和布局的概念</title>
  <style>
    /* 布局 */
  </style>
</head>

<body>
  <!-- 结构 -->
  <header class="header-caontainer">
    <div class="container">
      <div class="header-logo-container">
        <!-- 内容 -->
        <img src="" alt="">
      </div>
      <div class="header-nav-container">
        <ul>
          <li></li>
        </ul>
      </div>
    </div>
  </header>
</body>

</html>